class hierarchy

class hierarchy

(programming)

A set of classes and their interrelationships.

One class may be a specialisation (a "subclass" or "derived class") of another which is one of its "superclasses" or
"base classes".

When a method is invoked on an object it is first looked
for in the object's class, then the superclass of that class,
and so on up the hierarchy until it is found. Thus a class
need only define those methods which are specific to it, and
inherits methods from all its superclasses.

However, a different mood pervades the work: the standardisation of time highlighted by the Great Clock of St Pancras, new technology and engineering, class hierarchy and status, social discipline, consumerism and advertising all feature in this painting, presenting a view of London that is beautiful and ethereal, a vision of progress, yet also rooted in the materiality of everyday life.

And by 1999-2000, women at the bottom of the social class hierarchy and those in the most deprived areas were about a fifth less likely to have an elective C-section than those at the top or living in the wealthiest regions.

To be clear, there are 40 creditors that want a piece of Tom Hicks (at this point, it might be moving from figuratively to literally), but there is a class hierarchy in place with them -- primary and secondary lenders looking to get their piece of the sale, with a predatory hedge fund holding the most debt and looking to make a sizeable profit off the deal.

Given that the AbstractXmlDocument class knows nothing yet about the format and contents of the actual XML file on disk, the XML schema details to validate against will have to be provided by upper levels in the class hierarchy, from derived classes.

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